Lever-clutch



(No Model.)

m w w w M 2 um w 9 y a d I I nvvb t n e I v a P UNITED STATES PATENTOFFICE.

JOSEPH HILL, OF WILLIAMSPORT, PENNSYLVANIA.

LEVER-CLUTCH.

SPECIFICATION forming part of Letters Patent 1\l'o. 278,137, dated May22, 1883. Application filed April 6, 1883. (No model.)

To all whom it may concern Be it known that I, JOSEPH HILL, ofWilliamsport, in the county of Lycoming and State of Pennsylvania, haveinvented a new and useful Improvement in Lever-Clutches; and I do herebydeclare that the following is a full and exact description of the same,reference being had to the accompanying drawings, and to theletters ofreference marked thereon.

My invention relates to a lever-clutch used in connection'with acylinder and adapted to have two functions-via, when the free end of thelever is raised out of a normal position it is capable of giving arotary forward movement to the cylinder, and when the leveris restoredto a normal position it offers no impediment to a rotation of thecylinder in either direction; thus when the free end of the lever is.

held in the raised position it prevents the cylinder from a backwardrotary movement; and the novelty therein consists in the constructionand arrangement of the lever and of the cylinder, and in the variousoperative combinations of the several parts. v

For the better comprehension of my invention, reference should be madeto the accompanying drawings, in which Figure 1 is a perspective of mydevice; Fig. 2, a vertical section of the same on the line 00 wotFig. 1. Fig. 3 is a horizontal section on line y y of Fig. 1.

Fig. 4 are separate views of one of the collars.

Similar letters denote corresponding parts in all the figures.

In the drawings, A represents any suitable sleeve, made, forconvenience, in two parts, adapted to be secured together, and thesleeve itself adapted to be secured to a shaft. Upon this sleeve areplaced two collars, B B, made conveniently in two parts, withthe endshalved to lap by and fit to each other, adapted to be secured together,which collars have freedom of rotation (more or less limited) about thesleeve A, and within or against the cylinder presently to be'deseribed.These collars, upon their outer surfaces, are preferably in the sameplane as the outside of said cylinder; but the collars have flanges a,which fit into correspondin g grooves, a, in the interior of saidcylinder. Upon the outer side of each collar are ears I) I), withinwhich or to which are pivoted the inner ends of the lever presently tobe described, and also'bosses 0, which are adapted toreceive screw-b0]ts, which pass through the halved ends of the collars and secure themtogether, andalso mayserve to pivot the trip hereinafter described,suitable provision being made to lock or pin such screwbolts, so thatthey may not work loose in use.

The cylinder proper, O, is preferably in two parts, and may be cast withthe separate parts of the sleeve A, or,if not so cast, should be rigidlysecured to said sleeve. This cylinder has a smooth face, and may be madeof any ordinary metal, preferably of cast metal. I

The lever D has jaws d, each of which is pivoted to or within the ears 0b on the two collars B B, and havealittle' freedom ofmovement within theears I) b, which for that purpose have their sides diverging a littleoutwardly. Outside of the jaws the lever has a. suitable arm, 0, adaptedto be connected with any proper contrivance for raising it, or withanyordinary handle. Within the jaws d of the lever is a recess, f, inwhich a small loose cylinder, E, is retained in position at a suitabledistance from the face of the cylinder 0.

A trip-rod, F, or similar device, preferably forked, is pivoted to thecollars B B veryconveniently by the screw-bolts which secure the twoparts of the collars together. If now the free end of the lever beraised, the cylinder E takes or binds against the face of the cylinderO,as shown in dottedlinesin Fig. 2,and causes it to rotate as long asthe lever is moved in that 85 direction. 'When the free end of the leveris held' in that position the small cylinderE still maintains itspressure against the face of the cylinder 0 and prevents its backwardrotation. When the lever returns to its normal position, as in fulllines in Fig. 2, then the cylinder 0 has freedom of rotation in eitherdirection. When by means of the trip-rod F the collars B B are rotated,and in turn raise the pivoted ends of the lever, and the small cylinderE is moved out of contact with the face of the cyl- -inder'G, then thiscylinder has freedom of rotation in either direction. This result is accomplished by the axial relations'of the cylinders O and E. When thelever D is in a normal position theceuters of the axle of the cylinder Eand the pivoting-bolt to the lever is in the same line, and this line isthe shortest line from the center of the axle tothe center of therecessffor the cylinder E, and this line is of such length that when thecylinder E is close to its recess there is a space between the cylindersO and E, and the cylinderU may have freedom of rotation in eitherdirection. When the lever D is raised by its free end or lowered by itsfree end out of the normal position, then the line from the center ofthe pivot of the lever 1) to the center of the cylinder E is tangentialto the line from the center of the axle to the center of the lever-pivot, and consequently the cylinder E is brought more nearly to and inactual contact with the face of the cylinder 0. The same result followswhen the inner end of the lever is moved by the trip. When all thecenters named are in line there is no contact of the cylinders. Whensuch centers are out of line there is such contact.

It is manifest that the collars described by me may be made to turnwholly upon the outside ofthe cylinders, and that for some purposes boththe collars and cylinder may each be made in one piece, and that thepart E need not be a cylinder, but maybe one or more balls and thatother changes may be made in the construction and arrangement of theoperative parts without departing from the spirit of my invention.

It is manifest, also, that this clutch is capable of use for a largenumber of purposesfaud it is my intention to prepare applications forLetters Patent for such clutch in connection with other mechanism, andfor avariety of such purposes, intending in this application to confinemyself only to the invention herein described.

The advantages which 1 assert for my device are simplicity anddurability of its several parts, and great effectiveness in operation.

Having thus described my device, what I claim as new therein is- 1. Alever-clutch pivoted to a rotating collar, substantially as described.

2. In combination with a pivoted lever-clutch, a rotating collar havingrotation about a fixed cylinder, substantially as described.

3. In combination with apivoted lever-clutch, a small cylinder, or itsequivalent, supported within saidlclutch, and between it and a cylindercapable of rotation, substantially as described.

4. In combination with a lever-clutch and a rotating collar, a tripadapted to rotate such collar, substantially as described.

5. In combination,thelever-clutch,the small cylinder E, the collars, thecylinder 0, and the trip, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH HILL.

Witnesses:

E. O. MGCLEARY, GEO. H. COOPER, Jr.

